• it is JIT just in time interpreted , i.e compiles line by line , not all at once in the start

• it is dynamically typed
• it is single threaded lang, or use only 1 cpu / core
• not very strict or memory safe, and not as fast, companies shift to cpp or rust in future for better applications
• memory management
  • by garbage collector
• DATA TYPES
  • number
  • strings
  • boolean
• let, use only → var and const
• operators
• functions
• arrays
• complex types

  • objects is same as hashmap as in java, it s like a collection of key value pairs

    let user ={
    	name: "Sahil"
    	age: 19
    }
    console.log(user.name)
    console.log(user["name"])
    

  • for having more than one objects we can have it in an array

To import we use require

Synchronous code

Asynchronous code

• Functional arguments - pass a function as an argument to a function